a bio question from the old thread

[finwon]

Advertisement - Members don't see this ad

Here is the question and the answer.

Which process is NOT shared by eukaryotes and prokaryotes?

A. DNA synthesis precedes spindle formation during division
B. Each daughter cell receives half of the maternal DNA
C. Glycolysis provides ATP for cell use
D. Oxidative phosporylation may provide ATP for cell use

Answer: A

There is no spindle formation in prokaryotes (bacteria) because bacteria do not use the process of mitosis to reproduce. Prokaryotes reproduce by binary fission

----------
I knew A was the answer, but I wonder how B isn't a wrong statement.
When bacteria reproduce by binary fission, their daughter cells (newly reproduced individual bacteria) contain the exactly same DNA material as their parents.
Am I misunderstanding the concept of binary fission?

 

[sickeye29]

I think the reason B is true is DNA replication is semi conservative. correct me if im wrong though

 

[Ex_EE]

I think the reason B is true is DNA replication is semi conservative. correct me if im wrong though

That is true, but prokaryote dna is a single loop instead of double stranded. So, I believe B should be wrong as well.

 

[sickeye29]

i disagree or maybe im just misunderstanding you, but prokaryotic DNA is double stranded and circular. or i might be wrong but im 95% sure

 

[BodybldgDoc]

DNA proceeds semi-conservatively in prokaryotes but there is no maternal and paternal DNA. Its just the DNA from the original parent which undergoes asexual reproduction and this is why statement B would be wrong.

 

[Lonely Sol]

DNA proceeds semi-conservatively in prokaryotes but there is no maternal and paternal DNA. Its just the DNA from the original parent which undergoes asexual reproduction and this is why statement B would be wrong.

yess!! There is no maternal or paternal stuff in prokaryotes1

 

[jdmsamurai]

yea